Showing papers on "Sativum published in 1988"
TL;DR: Indigenous rhizobia were incapable of supporting adequate levels of N2 fixation at most sites in this study, but their validity as reference crops for the grain legumes included inThis study was not tested.
Abstract: Annual grain legume production has increased substantially in Western Canada over the past 15 yr but more information on the N2-fixing potential of these crops is needed 15N isotope dilution was used to determine N2 fixation of several grain legumes under dryland field conditions in Saskatchewan Two cultivars of lentil (Lens culinaris Medik), pea (Pisum sativum L), and fababean (Vicia faba L) were grown at five locations in both 1984 and 1985, with all major soil zones represented by at least one location in each year Drought stress was moderate to severe at all sites in 1984 and at sites in the Brown and Dark Brown soil zones in 1985 Barley (Hordeum vulgare L) and wheat (Triticum aestivum L) were nearly identical as non-N2-fixing reference crops, but their validity as reference crops for the grain legumes included in this study was not tested Indigenous rhizobia were incapable of supporting adequate levels of N2 fixation at most sites in this study Inoculation increased total dry matter, total
61 citations
TL;DR: Non-nodulating mutants of Melilotus alba annua (Desr.) cv.
61 citations
55 citations
TL;DR: The aim of this work was to discover whether the Ra locus in Pisum sativum affected the maximum catalytic activities of starch synthase, ADPglucos and to investigate the mechanism behind this effect.
52 citations
01 Jan 1988
TL;DR: A disease scoring method has been developed in this article to identify resistant germplasm for wheat resistant to H. sativum, which is effectively controlled with triadimenol.
Abstract: The environmental conditions in Zambia during the last 2 seasons were conducive to the development of Helminthosporium sativum diseases on wheat. A disease scoring method has been developed. Double digit scores at specific growth stages are used to identify resistant germplasm. A correlation matrix shows highly significant negative correlation coefficients between H. sativum scores, yield parameters, and plant height of entries in the 1986 national and advanced tests. Tropical wheat varieties resistant to H. sativum are being developed with germplasm from Brazil, CIMMYT, and local crosses. Yields up to 3.3 t/ha have been recorded. Seedborne H. sativum is effectively controlled with triadimenol. Cochliobolus sativum, the perfect stage of H. sativum, occurs in Zambia. Varieties under commercial production include Whydah (PF7748), Hornbill (IAS64/Aldan), PF7339/Hahn'S', and Predg/Nac//PF7748.
50 citations
49 citations
TL;DR: Six-day-old seedlings of Pisum sativum were incubated for 5 hr with their roots in [ 14 C]glucose, the pulse, and then transferred to glucose for fruit development.
41 citations
TL;DR: The larvicidal properties of 34 plant extracts were tested against Aedes fluviatilis (Lutz) larvae, at 100, 10 and 1 ppm concentrations; 26,6% of the extracts enhanced larval mortality.
Abstract: The larvicidal properties of 34 plant extracts were tested against Aedes fluviatilis (Lutz) (Diptera: Culicidae) larvae, at 100, 10 and 1 ppm concentrations; 26.6% of the extracts enhanced larval mortality (alpha = 0.05) at 100 ppm (Anacardium occidentale, Agave americana, Allium sativum, Coriandrum sativum, Nerium oleander, Spatodea campanulata, Tibouchina scrobiculata and Vernonia salzmanni). Anacardic acid (A. occidentale) was effective at 10 ppm and A. sativum (crude extract) at 1 ppm.
40 citations
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39 citations
37 citations
TL;DR: By a simple infiltration-extraction procedure, the majority (87%) of this α-amylase activity was recovered from the pea stem apoplast without significantly disrupting the symplastic component of the tissue.
Abstract: Most of the activity of an α-amylase present in crude pea ( Pisum sativum L. cv Laxton9s Progress No. 9) leaf preparations cannot be found in isolated pea leaf protoplasts. The same extrachloroplastic α-amylase is present in pea stems, representing approximately 6% of total stem amylolytic activity and virtually all of the α-amylase activity. By a simple infiltration-extraction procedure, the majority (87%) of this α-amylase activity was recovered from the pea stem apoplast without significantly disrupting the symplastic component of the tissue. Only 3% of the β-amylase activity and less than 2% of other cellular marker enzymes were removed during infiltration-extraction.
TL;DR: The effects of extracts from Chara tomentosa L., Ceratophyllym demersum L. and Myriophyllum verticillatum L. were tested in laboratory experiments as mentioned in this paper.
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TL;DR: The correlation between infection by Rhizobium leguminosarum and lectin expression in pea roots has been investigated by comparing root lectin mRNA levels in inoculated plants and in plants grown under conditions preventing nodulation.
Abstract: The expression of a lectin gene in pea (Pisum sativum L.) roots has been investigated using the copy DNA of a pea seed lectin as a probe. An mRNA which has the same size as the seed mRNA but which is about 4000 times less abundant has been detected in 21-d-old roots. The probe detected lectin expression as early as 4 d after sowing, with the highest level being reached at 10 d, i.e. just before nodulation. In later stages (16-d- and 21-d-old roots), expression was substantially decreased. The correlation between infection by Rhizobium leguminosarum and lectin expression in pea roots has been investigated by comparing root lectin mRNA levels in inoculated plants and in plants grown under conditions preventing nodulation. Neither growth in a nitrate concentration which inhibited nodulation nor growth in the absence of Rhizobium appreciably affected lectin expression in roots.
TL;DR: It is suggested that both protective application of pesticides and use of bee pollination are essential for maximum crop yields.
Abstract: SummaryEffects of pesticide application and pollination by bees were studied in 11 cultivated crops: toria (Brassica campestris var. toria), raya (B. juncea), rock cress (Eruca sativa), turnip (B. rapa), cauliflower (B. oleracea var. botiytis), radish (Raphanus sativus), carrot (Daucus carota var. sativa), fennel (Foeniculum vulgare), coriander (Coriandrum sativum), cumin (Cuminum cyminum) and alfalfa (Medicago sativa). Either factor alone gave small yield increases but the two combined interacted significantly to give major increases. This study suggests that both protective application of pesticides and use of bee pollination are essential for maximum crop yields.
TL;DR: The specific activity of Co-60 was lowest in Group C during the entire growth period and was on average higher in Group A than in Group B, and the concentration of the nuclide, per unit mass of dry matter, increased during the whole growth period.
TL;DR: The rooting ability of 2 cm long shoots of Pisum sativum L., derived from differentin vitro shoot-tip cultures in two pea cultivars Bohatýr and Kleine Rheinländerin was evaluated.
Abstract: The rooting ability of 2 cm long shoots ofPisum sativum L, derived from differentin vitro shoot-tip cultures in two pea cultivars Bohatýr and Kleine Rheinlanderin was evaluated In three mutually independent experiments the full and half-strength Murashige-Skoog medium (containing full or half concentration of macro and microelements), with sucrose concentrations 10–30 g l-1, and with various NAA and IAA combinations, was tested The variant with half concentration of macro- and microelements, supplemented with 30 g l1 sucrose, and with growth regulators in the quantity of 1 μM proved optimum
TL;DR: The isolation of pyridoxine-deficient pea mutant demonstrates directly that pea plants synthesize their own pyrIDoxine and that pyridsoxine is an essential growth factor forpea plants.
Abstract: A stable pyridoxine-deficient pea mutant was obtained by screening the M2 progeny of azide-treatedPisum sativum cv Pusa Harbhajan. The mutation is visible lethal. The isolation of pyridoxine-deficient mutant demonstrates directly that pea plants synthesize their own pyridoxine and that pyridoxine is an essential growth factor for pea plants. The mutant character is determined by homozygous recessive alleles, designatedpdx-1, at a single locus. Pyridoxine-deficient plants are fertile and indistinguishable from the wild type if supplied exogenously with 2 mg of pyridoxine.
TL;DR: Fumigation experiments with SO 2 and NO 2 alone and in combination were carried out to study the effects of low concentrations like those found under conditions in the natural environment on growth of Pisum sativum.
TL;DR: Partial or complete replacement of soybean meal by screenings from two cultivars as 0, 11, 22 or 33% of barley diets did not reduce growth rate, efficiency of feed conversion or carcass grade of pigs fed ad libitum from 26 to 94 kg liveweight.
Abstract: Partial or complete replacement of soybean meal by screenings from two cultivars (B.C. Blues, Century) as 0, 11, 22 or 33% of barley diets (16% crude protein) did not reduce growth rate, efficiency of feed conversion or carcass grade of pigs fed ad libitum from 26 to 94 kg liveweight. Key words: Pig, pea, screenings, growth, carcass
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TL;DR: A procedure was developed for discrimination and identification of cultivars of field pea on the basis of the electrophoretic patterns of the acetic acid soluble seed proteins.
Abstract: A procedure was developed for discrimination and identification of cultivars of field pea (Pisum sativum L.) on the basis of the electrophoretic patterns of the acetic acid soluble seed proteins. The electrophoresis is done on 7% polyacrylamide gels at pH 3.1 in aluminum lactate buffer.Key words: Pea, Pisum sativum L., cultivar identification, lactate PAGE, electrophoresis
TL;DR: Four Danish strains of R. leguminosarum originating from Denmark were found to be very similar to the Turkish strain with respect to the overall organizations of their respective nodulation regions.
Abstract: Rhizobium leguminosarum strains that can form nodules on Pisum sativum cv. Afghanistan have been reported as uncommon in Europe, North America and Africa [11, 12]. The organization of the nodulation regions of the symbiotic plasmids of five strains of R. leguminosarum originating from Denmark [9], which can nodulate P. sativum cv. Afghanistan, was compared with that of a Turkish strain (TOM [18]) by DNA hybridizations. Four of the five Danish strains were found to be very similar to the Turkish strain with respect to the overall organizations of their respective nodulation regions.
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TL;DR: The tolerance of several field pea cultivars to glyphosate was compared in the laboratory and greenhouse, using root, foliar, and tissue culture exposure techniques as mentioned in this paper, and the response among glyphosate exposure techniques did not always agree.
Abstract: The tolerance of several field pea cultivars to glyphosate was compared in the laboratory and greenhouse, using root, foliar, and tissue culture exposure techniques. Pea cultivar response among glyphosate exposure techniques did not always agree. However, the cultivar ‘Alaska’ was consistently one of the most susceptible cultivars regardless of exposure technique. ‘Melrose’ was one of the most tolerant cultivars, especially when its roots and cells were exposed to glyphosate. The response of ‘Frogel’, ‘Glacier’, and other cultivars varied among glyphosate-exposure techniques.